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For most homes bought under construction after 1 April 2019, the effective GST is 1% for a qualifying affordable apartment and 5% for any other residential apartment, with no input-tax credit (ITC) under that scheme. A sale is generally taxable when it occurs before the competent authority issues a completion certificate or before first occupation, whichever happens first. A sale after that point is generally outside GST.
The promoter is responsible for charging and paying this construction GST. As a buyer, verify the project’s rate category, taxable value, certificate status and invoice rather than accepting a vague “GST extra” demand.
When GST applies to a flat
GST treats the construction of a residential apartment as a service while the project is still legally incomplete. The key question is not whether the building looks finished or is advertised as “ready to move.” It is whether the sale took place before the legally recognised completion or occupation milestone.
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If the agreement or sale occurs before the competent authority issues a completion certificate, the construction supply is generally taxable. The same applies when the apartment is first occupied before a completion certificate is issued. The earlier of those legally relevant events is the practical cut-off used for classifying the sale.
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Sale after the cut-off
A completed building or ready-to-move-in flat sold after the competent authority has issued its completion certificate is generally not subject to GST. The Ministry of Finance stated on 8 December 2018: “there is no GST on sale of complex/ building and ready to move-in flats where sale takes place after issue of completion certificate by the competent authority.” A possession letter alone is not automatically a completion certificate; check the document issued by the authorised local body and its date.
| Situation at the time of sale | Normal GST result | What to verify |
|---|---|---|
| Construction ongoing; no completion certificate and no first occupation | Construction service is generally taxable | Agreement date, invoice date and project status |
| First occupation occurred before the certificate | Use the earlier occupation point for the cut-off | Evidence of first occupation and authority records |
| Completion certificate issued before the sale | Sale is generally outside GST | Certificate issuer, certificate date and sale consideration date |
| Seller calls a unit “ready to move” but provides no certificate | Marketing language does not settle the tax result | Written certificate or confirmation from the competent authority |
Current GST rates for residential apartments
The post-1 April 2019 real-estate scheme uses effective rates after the prescribed land-value treatment. The promoter must apply the correct project classification and charge the tax on the consideration covered by the construction supply.
| Apartment category | Effective GST rate | ITC | Main eligibility rule |
|---|---|---|---|
| Qualifying affordable residential apartment | 1% | Not available under this scheme | Carpet-area and ₹45 lakh gross-amount tests both satisfied |
| Other residential apartment | 5% | Not available under this scheme | Any taxable residential apartment that does not qualify as affordable |
These are effective rates for the specified residential-construction scheme, not a blanket rate for every charge connected with a property. Your invoice should identify the applicable tax treatment and the project’s classification.
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Both conditions below must be met. Failing either one moves the apartment out of the 1% category and into the applicable treatment for other residential apartments.
- Carpet area: no more than 60 square metres in a metropolitan city, or no more than 90 square metres in any other city or town.
- Gross amount charged by the builder: no more than ₹45 lakh.
The area test is based on carpet area, not the super built-up figure commonly used in brochures. Ask the promoter for the carpet-area figure used in the project’s GST records. The ₹45 lakh test concerns the gross amount charged by the builder; obtain a written calculation showing which consideration has been included.
Illustrative rate comparison
Suppose the consideration covered by a taxable construction supply is ₹40 lakh. If the apartment meets both affordable-housing tests, the effective GST at 1% would be ₹40,000. If the same consideration relates to a non-affordable apartment, the effective GST at 5% would be ₹2,00,000. These figures illustrate the rate difference only; the invoice must establish the legally determined taxable value and project classification.
Legacy projects and the one-time transition choice
A project that began construction and booking before 1 April 2019 and remained incomplete on 31 March 2019 could, if eligible, use a one-time transition option. The promoter could continue with an effective 8% rate for affordable apartments or 12% for other apartments, with ITC, instead of moving to the post-2019 1%/5% scheme.
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This was a project-level choice supported by records, not an option that an individual buyer can select for a single instalment. The promoter’s election, construction and booking dates, and project accounts determine whether the old-rate regime applies. Ask for a written explanation and supporting project records if an 8% or 12% rate appears on your invoice. A promoter cannot justify an old rate merely by saying that your booking was made years ago.
| Project status | Possible rate framework | ITC position | Evidence to request |
|---|---|---|---|
| Eligible ongoing project, construction and booking before 1 April 2019, incomplete on 31 March 2019 | One-time 8% affordable or 12% other option | Available under the transition framework | Project election, commencement and booking records |
| Post-2019 project or project using the new scheme | 1% affordable or 5% other effective rate | Not available under the scheme | Classification and rate shown on invoice |
Who pays GST and how instalments are billed
The promoter, not the individual buyer, is responsible for charging and discharging construction GST. In a normal milestone-based contract, the promoter issues a tax invoice for the taxable construction consideration and collects the GST with the instalment. The tax is paid in cash under the 1%/5% scheme; the official FAQ notes that any ITC may be used for another service supply, not to reduce this construction-tax liability.
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The official material does not provide a complete time-of-supply analysis for every situation involving advances, delayed instalments, cancellations or a balance paid after completion. Those cases depend on the CGST Act and rules and the wording of the agreement. Obtain professional advice before withholding or paying a disputed amount.
Documents a buyer should demand
- GSTIN and tax invoice: Confirm the promoter’s GST registration number, invoice number, date, place of supply and description of the apartment or construction service.
- Rate and taxable-value calculation: Ask the promoter to show whether the invoice uses 1%, 5%, 8% or 12%, and how the taxable value was determined under the applicable scheme.
- Affordable-housing evidence: Obtain the carpet area, city classification and gross amount charged used to support a 1% rate.
- Project-regime explanation: For an 8% or 12% charge, request the documented transition election and the project’s pre-1 April 2019 construction and booking status.
- Completion or occupation status: Request the competent authority’s certificate, its issue date and evidence of first occupation where relevant.
- Agreement reconciliation: Compare the invoice with the sale agreement’s instalment schedule, consideration, taxes and any later variation.
Exemptions for development rights and lease premiums
The real-estate rate notification exempts qualifying transfers of development rights (TDR), floor-space index (FSI) and certain long-term lease premiums used for residential construction. This is primarily a promoter-side exemption; it does not automatically mean that every buyer charge disappears.
Unbooked apartments at completion
When residential apartments remain unbooked at the completion certificate or first occupation, the promoter can face proportionate reverse-charge liability on the relevant development rights or qualifying lease premium. The notification provides the calculation method and caps. The liability is determined at project level and should not be added to a buyer as a separate surcharge without a clear invoice and contractual basis.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Promoter procurement conditions that do not create an automatic buyer surcharge
The 2019 CBIC update requires 80% of specified inputs and input services for the project to come from registered suppliers. A shortfall can trigger reverse-charge tax. Cement purchased from an unregistered person also attracts reverse charge at the applicable rate.
These are compliance obligations of the promoter. They may affect the promoter’s cost and tax accounting, but they are not a reason by themselves to invent a new line item on a buyer’s demand notice. If a builder seeks additional money, ask for the statutory basis, the invoice and the clause in the agreement authorising the recovery.
How to check your own GST position
- Fix the legal sale date. Identify when the agreement, allotment and relevant consideration were made payable, then compare those dates with the completion-certificate and first-occupation dates.
- Confirm the issuing authority. Do not rely solely on a developer’s possession email or marketing claim; verify the certificate issued by the competent authority.
- Measure the apartment correctly. Use the carpet area in the sanctioned or registered project documents, not the super built-up area in an advertisement.
- Test the ₹45 lakh ceiling. Reconcile the builder’s gross amount charged with the agreement and every compulsory component included in the sale consideration.
- Identify the project regime. Determine whether the promoter uses the post-2019 1%/5% scheme or has documented eligibility for the one-time 8%/12% transition.
- Audit each invoice. Check GSTIN, rate, taxable value, arithmetic, invoice date and linkage to the milestone or instalment.
- Escalate inconsistencies in writing. Ask the promoter’s tax team for a written calculation. For a disputed advance, cancellation, delayed payment or post-completion balance, consult a GST professional with the agreement and invoices.
Common mistakes and how to avoid them
- Assuming every small flat is affordable: the carpet-area limit and ₹45 lakh ceiling are cumulative requirements.
- Using super built-up area: the definition uses carpet area, so a brochure’s larger figure can mislead.
- Treating “ready to move” as a legal certificate: the certificate issuer and date control the GST analysis.
- Applying 5% to an old project automatically: an eligible project may have a documented 8%/12% transition election, while an ineligible project cannot claim it.
- Paying a second tax on promoter costs: TDR, FSI, lease-premium and 80% procurement rules generally concern promoter compliance, not automatic buyer surcharges.
- Ignoring invoice records: retain the agreement, demand letters, tax invoices, payment proofs and certificate because the rate depends on project status and dates.
What to do if the builder’s demand looks wrong
First request a corrected tax invoice or a written computation identifying the legal rate, taxable value, project regime and certificate status. Compare the response with the agreement and the authority-issued records. Do not unilaterally deduct tax from a contractual instalment without advice: a timing dispute can involve the CGST time-of-supply rules, interest and contractual default provisions. If the promoter will not explain the charge, take the complete document set to a qualified Indian GST or real-estate tax adviser and use the applicable departmental grievance or adjudication route.
For most post-2019 purchases, the decision is straightforward once four facts are documented: whether the sale preceded completion or first occupation, whether the apartment meets both affordable-housing tests, which project regime the promoter elected, and whether the invoice matches that determination.
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